BUDS AND BRANCHES 99 



The rudimentary leaves are stowed in the bud in a Avonder- 

 fully compact manner. There are several plans of arrange- 

 ment, all of which have received technical names. The mode 



FIG. 84. Cottonwood fruits, April 28 , 

 Reduced 



of arrangement is best shown in a cross section of the bud 

 like that represented in Fig. 79. 



In mixed buds, as a rule, the flowers are inclosed by the 

 leaves and usually develop earlier than the leaves (Fig. 83). 



89. Opening of buds. Winter buds are not absolutely inac- 

 tive during the colder months. Often a gradual increase in 

 the size of the bud can be noted for many weeks before it 



